Python Dictionary – Loop through Keys

Python Dictionary – Loop through Keys

A dictionary is a collection of key:value pairs. You may need to access and loop through only the keys of the dictionary.

To access the keys alone of a Python Dictionary, use the iterator returned by dict.keys(). Then use Python For Loop to iterate through those keys.

Example 1: Loop through Dictionary Keys using dict.values()

In this example, we will initialize a dictionary with some key:value pairs, and use for loop to iterate through keys in the dictionary.

Python Program

dictionary = {'a': 1, 'b': 2, 'c':3}

for key in dictionary.keys():
	print(key)

Run

Output

a
b
c

Example 2: Loop through Dictionary Keys using dict.items()

Similar to dict.keys(), dict.items() returns both key,value during each iteration. You can access only the key from the key:value, while traversing through the dictionary.

Python Program

dictionary = {'a': 1, 'b': 2, 'c':3}

for key, value in dictionary.items():
	print(key)

Run

Output

a
b
c

Summary

In this tutorial of Python Examples, we learned how to iterate through keys of a Dictionary with the help of well detailed examples.